Sheet-mounting machine



5 Sheets-Sheet 1 M. FEYBUSCH ET AL SHEET MOUNTING MACHINE Filed Apri l 28.

June 8 1926.

. fjvwemtoz/ M ner/N FL- reused Paul. M llE/SC/{Lffi 4 $4M x M a mezk GHOWWW June 3 1926.

M. FEYBUSCH ET AL SHEET MOUNTING MACHINE Filed April 28, 1923 5 Sheets-Sheet 2 anvcnbow MHRT/N FEY USc/I PAN/L 14 FLEISCf/ER $51 Finch abfom'tm l WMMOMM June 8' 1926.

1,587,905 M: FEYBUSCH ET AL SHEET MOUNTING MACHINE Filed April 28. 1925 5 Sheets-Sheet 5 MHE'TIA/ fin Base P/Il/L W. FLE/SCHER 351 mm abiiomegb' "ar mas/M 5 Sheets-Sheet 4 M. FEYBUSCH ET AL SHEET MOUNTING MACHINE Flled Aprll 28 1925 m? 1 w v 1| 1 June 8 1926.

Patented June 8, 1926.

UNITED STA'lEEi l..li..'.l'E.hlT l 'FlCE.

MARTIN FEYBUSCH, OF NEVZ' YQRK, N. 3. AND PAUL N. FLEISCI-TER, OF VTEEHAWKEN,

oil

.PORA'IION, OF I-IOBOKEN,

HEX/V JERSEY. A COBPORATIQN E31? NEW SHEETJWOUNCIING TEACHENE.

Application filed April 28, 1923.

to machines :tor i'or rusting); large graphs and ilco on cordicl'iires. linings-i and no enroll in the operation of nmchincs ot this clin -actor. cspcciolly when tl iiii'on slzaiilelv small dian'ieter could he used and machine 5111c rolls ct ed :lfor hirgg'e output.

liic'ot 1 liquid character. there would he no particular dilliciiltv in obtaining an even cooling of tho sheets to he mounted. With grim. rolls of relatively large diameter, howcvcr. as used in our machine, it has locen li'lQ not distrilnil'ed on h the n i or rnhle in n'nnhmes of this ciuirocici. it (linicult to obtain siiiiiciontl'y even distrilmtion oi the posts. the hitter hovo. tcndencv to term hes. or spots of imcvr-iri thiclrnoss which o 'od icc on unsightly a n l vrhcrehv the picture or 0t or siieot will woronce oi? tho n'ionnicd sheets.

t is thorctore the purpose oi? our prosr-int invention to noviile (l nt-rote :inion':nticallv to paste hcr oi shoo s in machine r-shich will a large niiinich will snow .....on. and v7 this in o. sot-is" .torv i'minncr. Anothor oi. the ii'ivenlum is PlU'v'HliB means to ll be inoiinlo l on the cardboard vcry accurately and without 'lixrminpr wrinkles or blisters.

wordi n "if 2 le shoot hv ps'oi 'iding moons wherchy this to our inversion we obtain the dercsiilt oi? :1, perfectly oven costing; oi:

i1. otter n has ljllifl applied to the shoot sin lie'i'i'ii'c the shoe? is mounted on the curdlKHii'll or other backing. is sn'ioothwl out so as to r i hino that manne that i.

move not imewniness in sin-h coating. iother ohject of the invention rehitos to inc-win; il'or Etc-oping the shoot undor e *on do *iogr iho sheet-opplying opcrot o tento so arrange tho -..zratc in such :1.

no sheet will register pro 'icrlv l "(i to which it is to he posted. [1 iii .1 is to provide simple adjust i 1 incur-: w .orehy the nmchinc can readily hc :sloote sheets and hoards of varying; 1Li--- ..1id lcngths. Still a further object is Serial No. 635,229.

to so construct the machine that the parts which require frequent cleaning, are made readily accessible and removable.

lo a. general way, our machine comprises two tables located at opposite ends of the machine and serving to support the sheets and hoards respectively which are to be connccted. lhese sheets and boards are fed into the inscliinc one by one, by intermittently operated feed mechanism. The sheet is taken up by continuously-driven fed mechanism and ted to a glue roller which provides it on one sidc with a coating of adhesive. The sh it then passes over a smoothing device which serves to smooth out any unevenness in. the coating, whereupon it reaches the mounting; rollers which mount it on the sheet oil cordho rd or other haoliin which is bein i l 1 is 2. longitudinal section through the whole machine; Fig. 2 is an enlarged sec tion of the main parts shown in Fi 1; Fin; 2' is :1 side elevation; Fig. 4: is an end viow looking toward the left in Fig. 3; Fig. 5 is :1 section on line of Fig. 3; Fig. 6 is a sanction on lino 6-6 of Fig. 5; Fig. 7 is a section on line T-T of Fig. 2; Figs. 8 and f) src small detail. views showing more clearly certain parts illustrated in Fig. 2. these sectii is bring); taken on lines 8--8 and 9-9 respcctivcly o? Fig.5. 7 Fig. 10 is All enlz rged detail view oil certain parts shown in F1 1 2; lilo. it is a detail viewshowing; a conveyor port indiczitcd in Fig. 9.; and Fi 12 is a i ortial plain view of ono of the tables with its gouging devices.

'llhe l'liiicllille illustrated in the drawings comprises parallel frames 20, 20 and 21, 21 respectively, carrying at one end a table 22 serving as a support for the sheets to be mounted lind at the other end a tahle 23 serving as a support for the boards on which the sheets are to be mounted. Adjacent to the forward end of the table 22 are arranged two impeller rollers 24, 25 the upper one of which, 25, need not be continuous but may consist of spaced, rubber-covered disks such as indicated at 25 in Fig. 7. 9n the side of the rollers 24, 25 opposite to the table 22 is arranged a support 26 (Fig. 2), and at the other end of this support are a pair of feed rollers 2?, 28, the upper one of which 28, is supported loosely in open-top slots of brackets 29 and rotates by frictional con tact with the lower roller 27. @n the other side of the rollers 2?. 28 are located two gumming rolls 30. 31, the lower one of which, 30. rotates in such a manner that a portion of its surface dips into aglue pan 32, and it transmits a coating of glue or other adhesive to the upper roll 31 which coating is then communicated to the sheet passing over the roll 31. An .L-shaped 33 carried by brackets 34 supported adjust ably by means of set screws 35 serves to press the sheet into contact with the glueapplying roll 31. The sheet is removed from the roll 31 by means of spaced pickotf fingers 36 mounted on a rod 37 rest-inn in slots of the machine frame and held in such slots by screws 39. Carried by the fingers 36 are curved guide members 40 which serve to lead the sheet away from the roll. 31, over a roller 41 and into contactwith another roll, 42. a curved guide plate 43 serving to direct the sheet into contact with the surface of the roller 42. l Vhile the sheet passes over the roller 41 with its gumnied side facing away from the roller, it is reversed when passing over the roller 42, that is. the gu-mnied side of the sheet faces the roller and comes in contact therewith, with the result that any unevenness which may be present in the coating of adhesive will be smoothed or evened out. A wiper 43 of felt or the like is arranged adjacent to the roller 42 and. in contact therewith; this wiper can be adjusted toward and froin the roller by means of screws 44.

The sheet passing over the roller 42 is removed therefrom by picleofl fingers 45 similar to the lingers 3-6, carried by a rod 46 rest ins: loosely in suitable slots of a frame part. The curved guides 47 on these fingers guide the sheet around portion of a roller 48 which together with a roller 49 arranged above the roller 48 serves to mount the sheet on a piece of cardboard or the lire which has been brought into proper position by mechanism to be described further on. The roller 48 rotates in contact with a stationary wiper 50 covered with felt or the like and slidable toward and from said roller; springs 51 normally press the wiper against the roller. Set screws 52 hold the wiper against rotation but allow it to be adjusted around its axis in case of wear. The

' tween the free ends of the L- haped roller 49, wiich is preferably rubber-covered, is carried in bearing boxes 53 (Figs. 2 and 10) slidable up-and-down in slots 54 formed between the frame parts 20, 21 and respectively. The bearings 53 are normally pressed downward by springs and the tension of the springs. can be adjusted by means of screws 56 threaded into the bearings 53 and passing freely through stationary plates 5?, the latter forming bearing surfaces for the upper ends of the springs 55. The bearings 53 are provided'with inwardly projecting lugs 53 (Fig. 10) engagged from below by the rounded ends of lovers 58 pivoted at 586011 the frame parts 20, 21 respectively and carrying at their other ends rollers 59 adapted to be engaged by earns 60 mounted on a shaft The rollers 59 are normally in theposition Fig. 2 and are adapted to be depressed at times by the cams 60 for the purpose of raising the roller 49 out of contact with the roller 48, as will be explained below. Screws 53 serve to adjust the position of the levers 58.

Mounted on the shaft 61 are disks 62 (Figs. 2 and 4) provided with a rubber covering having raised portions or pads 62 extending over part of their circumference. Ar anged underneath the shaft 61 in a position to cooperate with said pads 62, is a roller 63 the upper surface of which is approximately in alignment with the table 23. Between the roller and the roller 48, in alignment with their upper surfaces. is a ranged a support 64 similar to the support 26. As shown in Figs. 2 and 3, the shaft 61 is mounted .ielcli1.,;ly, a spring 65 tending to press it toward the roller On the side of the rollers 48, 49 opposite to the table 64 are arranged L-shaped brackets 66 (Fig. 2) pivotally supported on the frame parts 20, 21 at 67 and normally held stationary by locking levers 68 and 3) also pivoted to said frame parts. Mounted between the brackets 66 is a roller 09 over which extends an endless conveyor belt which may consist of spaced bands 70 01'? canvass or the like. These bands are held. apart by spacing members T1 (Figs. 2 and 11) carried on a bar 72 extending rigidly bebrackets 66. The members 71 are ad ustable not only lengthwise but also circ ferentially of the bar 72 and may thus serve to edits the tension of the individual conveyor bands. Set screws 71 hold the members v71 in position after such adjustment.

The conveyor 70 passes over a roller 73 supported on a friction rollri device indicated in Fig. 1 and comprisr two sets of rubber-covered rollers "4. 74 and 75, 75 driven by suitable near from a pulley 76. The roller 73 is driven by a a'ear 7? in mesh with the gear on the roller '74 and it is carried in, brackets 78 adjustable about the axis of the gear 77, e loekin screw 78 serving to secure the h 'uclzets in position. By changing the p sition of the brackets 78, the tension of the conveyor belt as a whole can he *uried.

The rollers 2'7, 30, 31, ll, 12, l8 and 4-9 are driven continuously in the following; i'nunner (Figs. 3 and 1) Between the :trzune parts 20, 21 is zi'ron red it main shaft 7') driven by means oil a pulley and provided with 21 hand wheel 81. This shaftcurries a gem 82 in mesh with an idler gear meshing with a pinion 8% on the leed roller 2. The gear 83 also engages a gear 85 on the shalt of the upper glue roller 31. On this shalt are mounted a gear 86 mesh ing with :1 gear 87 on the lower glue roller 30 and a 88 meshing with a pinion S9 with which is rigidly connected it pinion 90 in mesh with a pinion 91 mounted on the shaft ol the roller 42. Another pinion, 92, also rigid on this shaft, meshes with EL- pinion 93 on the shaft of the roller 4-8, and on the other side of the machine this roller *erries a pinion 9 1 in mesh with a pinion ill on the shaft of the roller 4:9. The roller ll is dfilren lj'roin the roller 42 by gearing 95, 96 (Fig.

The to d-in or in'ipeller rollers 25 and rated iiterinittently, that is whenever a new sheet and a new lJOlUft are to in reduced into the inacl'iine. The line 'hnnisnl for eli'eeting; this intermittent opc- .n is as follows (Fig 2, 3, 5, 6 and 7) i a transverse shaft 97 located underneath rollers 2 is mounted it gear 8 meshwith the gear on the main shaft 79 "ore driven continuously. Interiosed hei'itween the gear 98 and the shett 9T -leci'e ill) provid-d with redhilly-extend- 1 esses 100 in which are located clutch not as roll rs 101 engaging reinhers t ce sed or flattened portions 9? oil? the shaft (1 5 and 6). The huh ot the gear 98 provided with r; dial slots 38 in which are ocuted illlt'l'itlli plugs 102 engaging with heir inner surfaces the outer surface of the sleeve 99: these friction plug s are held in position by or annular coiled spring 103. it. collar illlel rigid on the shziil t 97 serves to prevent lateal movement of the gear 'lhe sleeve 99 IS proruled with :1 pro ecting e (lo lllQ in mesh with n pinion 113 on the roller 2 h this P1113011 also meshing with a pinion w 7 pin il ith this eonsnruction 50011 that the roller 24; rotates us the pinion 11 i is in mesh with the l the undiluted green 112, and that it lonp as teeth o is held stationery during the time that the gear 11:2 rotates rith its ledge L12 engaging; the loehin disl' 115. The roller with is movable up and down relatively to die roller 24:, and for this purpose the roller 25 snpjwrted in urine '18 tel ill), s n-inns tending to hold its pinion ii crunied at the upper ends of said arms in eng ugenient with zidiustiiip; screws 121. screwed into the of lovers 122 rigid on short rock- 1223. lilecued .1 r rigidly to one of 1 l: :hn'l'ts 123} is e lever pivotally ed with the irpper end of a slide 125 l" guided in its movement on the shaft 5 carrying; at it ower end a roller 126 actuated by a com 12"? held to rotate with the shaft 87. The springs 120 tend to hold the roller 1% in engageinent with the com 127'. On the shaft 97 is also mounted a sprocket 128 (Figs. 1 and T) which by means of e chain drives 1 sprocket 1250 D11 the roller shaft 63. on which roller shaft 1 u tinted n is i i pinion 1 :31 meshing with a gear 2 J. "he roller shaft til (Fine. 2 and i .ed in the pulley S0 is a friction c J 'x-l (Fig 5) actuated by a spring 134: to couple the inzil't 'iZ-l with the pulley 80.

lhe dutch 133 ere a sleeve 135 engaged h irked lever 15o t'nlcrinncd at 137 end mnncel'ed with its other end to a rod 138 which in turn connected by it link 1239 to e rorlt shalt 140 f 3 and l) held in hearings 111 and. provided with handles 142 ll operating one of these handles, the shot" 'l-lll can he tinned, thus disconnecting the clutch 133 from the pulley 80, against the tension or the spring 1341:.

To loci: the shaft 14-0 in. a position in which the clutch 133 disconnects the shaft 79 from the pulley 80, one ol the handles 14-2 only he provided with a socket 142 (F El) cooperating with e projection 14:33 on the adjacent hearing 1 11, a spring 1 1 1 tending to keep the projection 14:3 and the socket 142 in engagement. By pushing the shaft l i-0 lengthwise of its axis, against the tension of the spring 14%, the projection 143 will become disengaged from the socket 142, thus allowing the shalt 1 10 to he turned.

llFi

liZl) The lower glue roll 30 is not mounted rigidly, but yieldingly and adjustably with respect to the upper glue roll 31. It is supported in bracrzets 1 1-5 pivoted at 146 and pres upward by springs 14?, the pressure of the lower roll against the upper roll adjustable by means of screws 148, (Fr; and The glue pan 32 is carried by brackets 149 movable up and down by means of a lever 150 fulcru. ned at 151. a linlr 152 and crank 153 connecting the brackets and the fulcrum rod 151. A pin 15 ieugaging one or the other of a series of sockets 15 in the machine frame serves to arrest the glue pan in any desired position. The brackets 1&9 are forked at their lower ends 3), these forks fitting over the rod 151 and serving, in conjunction with lugs 156 on the frame (Fig. 2), to guide the bra lrets in th ir up-and-down movement.

In order to properly position the sheet and the board on their respective tables22 and 23, these tables are provided with gauges which have been illustrated in Figs. 3 and 12 in connection with the table 23. These gauging devices comprise side gauge 157 adjustable transversely of the table by means of slots 158 and screws 159, and an end gauge 160 adjustable lengthwise of the table by means of slots 161 and screws 162. For the purpose of affording adjustment over a wider range than the slots 158 and 161 permit, the table as well as the side gauges 157 are provided with sockets 163, 16 1 respectively. By simply shifting the screws 150 or 162 to another socket, such wider adjustment is obtained. It is to be understood that the table 22 is provided with gauges similar to those just described in connection with the table i he operation of the sheet-mounting machine is follows: First a sheet S to be mounted and a board B on which the sheet is to be mounted, are placed in position on their respective tables 22 and 23, with their backs and one of their sides against the gauges. The roller at this time is raised out of contact with the roller 24, so that the forward end of the sheet can be introduced between these two rollers, and similarly the forward edge of the board can be introduced between the rollers 62, 63. If then the friction clutch 133 is thrown in, connecting the shaft 79 with the pulley 80, all the rollers will be set in motion with the exception of the impeller rollers 24:, 25 and. 62, 63. In order to set these impeller rollers into motion, it is necessary to depress the handle 109 or the treadle 110 (Fig. 3). This will release the projection 105 from the lever 106, allowing the friction ilugs 102 to take along the sleeve 99 (Figs. 5 and 6) this moven'ient displacing the sleeve 99 slightly relatively to the shaft 97 and causing the friction rollers 101 to couple the shaft 97 with the gear 98, which latter into the machine, over the support 26, into contact with the feed rollers 27, 28. The sheet is seized by these rollers and passes under the guide to the upper glue roll 31 which provides it on one side with a coating of adhesive. as soon as the forward end of the sheet S has reached a point bet 'een the rollers 2?, 28, the feeding action of the impeller rollers 24, 25 is interrupted wing to the action of the cam 12? which lifts the roller 25 out of contact with the roller 2%. li'otwithstanding the fact that the roller 2 may continue to rotate until its pinion 113 reaches the end of the teeth of the mutilated gear 112, there is no positive feeding action by the impeller rollers, the feeding-in of the sheet S being now done entirely by the feed rollers 27, 28.

In the meantime, the lever 106 has been allowed to return to its original position, in the path of the projection 105 on the sleeve 99 (Fig. 6). As soon as the projection 105 comes in contact with the lever 106, the sleeve 99 will be arrested. The shaft 97 has a tendency to continue its rotation, displacing itself relatively to the sleeve 99, and this displacement will interrupt the frictional engagement between the rollers 101, the gear 98 and the shaft 97, thus bringing the latter to a stop. The impeller roller 24 will there fore be arrested and will not resume its mo tion until the handle 109 or treadle 110 are again depressed, which will be done only after a new sheet has been placed in position for mounting.

The sheet which has been coated on one side with adhesive, as described above, is removed from the roll 31 by the pick-off fingers 36 (Fig. 2) and guided by the guide fingers l0 over the roller ll into contact with the roller 42, with the coated surface facing the roller. It will be noted that the gears 90, 91 (see Fig. 3) which serve to drive the roller are so proportioned that the roller 12 will rotate at a greater angular speed than the roller -11, and as the roller 4-2 is also the larger in diameter, its periphery travels faster than that of the roller thereby not only effecting a wiping action upon the freshly coated sheet but also causing sufficient tension to be placed upon the sheet to maintain it in a smooth unwrinlrled condition. This roller is of great importance in our machine, since it serves in conjunction with the rollers 4-1 and d8, to place the sheet under double flexure which assists in maintai the sheet under tension in. such a w that the roller 42 will si'nooth out any unevenness which may be present in the coating of adhesive and which would produce unsightly places and spots in the finished mounting.

ifhe sheet is then removed from contact with the roller 42 by the pick-oil fingers 15 and guided around the roller 41:8 to the upper portion thereof by the guide iembers ll. It will be evident from an inspection of Figs. 2 and 3 that the linear speed of the peripheries of the rollers 48 and 1:9 is the same as that of the roller 42, therefore the tension placed upon the sheet is maintained until it is mounted.

During the rotation of the shaft 97 the roller shaft 61 has also been rotated by means of the sprockets 128, 130 and the chain 12!). lhe operation of the two shafts is so timed that when the sheet S reaches the upper portion of the roller d8, as just described, the forward edge of the board B will have been fed by the feeding disks 62 to the same point. The sheet .55 and the board *ill then pass together, that is, in contact with each other, between the rollers 48, 49 which will press them together, and the sheet will thus be mounted on the board. in order to prevent the glue from being squeezed. out at the "orward edge of the sheet, the pr ssure between the two rollers 4-8, 1-9 is relieved for 1 short moment by the cam 60, this latter lifting the roller 49 slightl away from the roller l8.

After passing between the rollers 48, d9, the mounted sheet is then taken over the conveyor to the friction roller device, where it passes between the sets of rollers 741:, T4 and 75, To. It will be noted that the members of each set of rollers are of cliffcrent diameters, the lower rollers 74: being smaller than the upper rollers 74, while the lower rollers 7 are larger than the upper rol. thus producing a slight flexure of the mounted board as it passes between each pair of rollers, which llexures are opposits in direction due to the reversal of the positions of the larger and smaller rollers. This double tlemre will have the effect of smoothing out any imperfections which may still. be present in the mounted sheet.

t lhould the board and the sheet not registor properly, or in other words, should either the board or the sheet reach the point of connection either too soon or too late, this can be remedied readily by simply shifting one or the other of the end gauges 160 toward or away from the machine.

In machine of this character it is very desirable that all the operating parts, and especially the rollers, be readily accessible for the purpose of inspecting, cleaning, or exchanging them. To obtain this result, each of the two machine frames has been made in two parts, one of which is movable relatively to each other. The movable frame parts 20, 21 are hinged to the fixed frame part (20 and 21 respectively) at 165 (Figs. 2 and 3), the parts being normally held together by locking arms 166 fulcrumed at 58 and having suitable recesses fitting over pins or screws 167. After unlocking the levers 166, the frame parts 20, 21 with the parts carried thereby can be swung from the position shown in full lines in Fig. 2 to that indicated in dotted lines, and the various rollers held in their bearings on the frame parts 20, 21 will be exposed and readily accessible. For the purpose of rendering these parts still more accessible, the portion of the table 23 adjacent to the machine is also made movable by being hinged to the remainder of the table as shown at 168 in Figs. 3 and 12. The left-hand end of the hinged table portion is supported on a rod 169 extending between the frame parts 20, 21. In ord r to swing the movable table portion to the position shown in dotted lines in Fig. 3, it is necessary to first remove the supporting rod 169, whereupon the table can be swung to such position, as will be clear from Figs. 2 and 3.

In order to render such machine parts as the roller 41 and the wiper 5O accessible, the right-hand end of the conveyor 70 is mounted movably, that is, it can be swung out of the way (Figs. 2 and 3). The locking levers 68 have recesses fitting over the bar 72, thus normally locking the conveyor in its operative position shown in full lines in Fig. 2. To bring the conveyor 70 to its inopera- 'tive position, it is released from the locking levers or latches 68, whereupon it can be swung up on its pivots 67 and brought to rest on notches or depressions 68 formed in the end surfaces of the latches 68, as shown in dotted lines in Fig. 2.

Various modifications may be made without departing from the nature of our invention as set forth in the appended claims.

We claim:

1. A machine for mounting sheets on boards, comprising mechanism for coating a sheet with adhesive, mechanism for mounting said sheet on. a board, continuously-operated mechanism for feeding said sheet to said coating mechanism, intermittently-operated mechanism for feeding said sheet to said continuously-operated feed mechanism, and means for interrupting the feeding operation of the last-named mechanism at a predetermined moment.

2. In a machine for mounting sheets on boards, parallel frames each having portions movable relatively to the remainder of the frames, and mounting mechanism so arranged as to be readily accessible when said movable frame portions are separated from the remainder of the frames.

3. A machine for mounting sheets on boards, comprising a pair of supports, one for a board and one for a sheet. a pair of feeding rolls adjacent to one of said supports, a second pair of feeding rolls adjacent to the other of said supports, means interposed between said supports for coating with adhesive one side of said sheets, an in termittent gearing for actuating said first named pair of rolls, and connections from said intermittent gearing for driving said second pair of rolls in timed relationship with said first named pair of rolls.

4. A machine for mounting sheets upon boards, comprising a pair of pressure rolls, a support for a board adjacent to said pressure rolls, a pair of feeding rolls for feeding a board from said support to said pres sure rolls, a gumming roll, a second support for sheets mounted on said machine at a distance from. said board support, a second pair of feeding rolls for feeding sheets from said second support to said gumming roll, and a plurality of rollers interposed between said gumming and pressure rolls for feeding the gummed sheet to said pressure rolls, means for driving said pairs of feeding rolls intermittently and for causing said first pair of feeding rolls to be operative a predetermined time interval after the operation of said second pair of feeding rolls.

5. A machine for mounting sheets boards, comprising a pair of pressure rolls, a gumm-ing roll, means for feeding a sheet to said gumming roll, and means interposed between said pressure rolls and said gumming roll, for transferring the gummed sheet from said gumming roll to said pressure rolls, said means including a spreading roll rotating at a greater speed than said gumming roll and engaging the gummed side of said sheet to spread the adhesive evenly thereon.

6'. A machine for mounting sheets upon boards, comprising a pairof pressure rolls, a support for a board adjacent to said pressure rolls, a pair of feeding rolls for feeding a board from said support to said pressure rolls, a gumming roll, a second support for sheets mounted on said machine at a cistance from said board support, a second pair of feeding rolls for feeding sheets from said second support to said gun'nning roll, a plurality of rollers interposed between said gumming and pressure rolls for feeding the gummed sheet to said pressure rolls, and means for driving said plurality of rollers at a greater speed than said gumming roll to maintain tension upon said gummed sheet in its passage from said gumming roll to said pressure rolls.

' A machine for mounting sheets upon upon and board to be inserted readily between boards, comprising a pair of pressure rollers, a pair of feeding rolls adjacent to said pressure rollers for feeding the boards thereto, a gumming roll, a second pair of feeding rolls to feed th sheets to be mounted to said gumming roll, means for driving said pairs of feeding rolls intermittently, and means actuated thereby for momentarily releasing the pressure between said pressure rolls as the sheets and boards are engaged thereby.

8. A machine for mounting sheets upon boards, comprising a pair of pressure rollers, a gumming roll, a pair of feeding rollers for feeding the boards directly to said pressure rollers, a second pair of feeding rollers for feeding the sheets directly to said g'umming roll, and means for transferring the guinmed sheet from said gumming roll to said pressure rollers, including a. transfer roll, a spreading roll, and plurality of curvec guid ing members to direct the sheets into contacting engagement with said transferring means.

9. A machine for mounting sheets upon boards, comprising a pair of pressure rolls, a gumining roll, a pair of feeding rolls for feeding the boards to the pressure rolls, asecond pair of feeding rolls to feed the sheets to the gumming roll, means for driving said feeding rolls intermittently and in predetermined timed relationship, and means actuated thereby for momentarily moving the members of eacn pair of feeding rolls out of contacting engagement to permit the sheets said feeding rolls.

10. A machine for mounting sheets upon boards, comprising a pair of pressure rolls, a gumming roll, a pair of feeding rolls for feeding the boards to the pressure rolls, a second pair of feeding rolls to feed the sheets to the gumming roll, resilient means to hold said feeding rolls normally in contacting engagement, means for driving said feeding rolls intermittently and in predetermined timed relationship, and means actuated thereby for momentarily moving the members of each pair of feeding rolls out of contacting engagement to permit the sheets and board to be inserted readily between said feeding rolls.

11. A machine for mounting sheets upon boards, comprising a pair of pressure rolls, a gumming roll, a pair of feeding rolls for feeding the boards to the pressure rolls, a second pair of feeding rolls to feed the sheets to the guinming roll, resilient means for holding each of said pair of feeding rolls and said pressure rolls normally in contacting engagement, intermittent means for driving said feeding rolls and means actuated thereby for momentarily moving the members of said first pair of feeding rolls, said second pair of feeding rolls, and said pair of pressure rolls out of contacting engagement suc- [iii oessi'vely and in. predetermined timed relationship in the oroer mnned.

152'. In a machine mounting sheets upon boards, a amming device for applying a coating of aohesive to the sheets, a pair of pressure rolls for pressing the gummed sheets upon the boards, a roller interposed between said pressure rolls and said summing device to t easier the guinined sheet from said gumniing device to said pressure rolls, to smooth the coating of adhesive upon said sheet and to exert atension upon said sheet and main tain it in a smooth unwrinlrled condition in its passage :l om said guinming device to said pressure rolls,

13. In a machine for inoui'iti sheets no on boards, gumming de uco ior 002N115? a sheet with adhesive, pressure meaitls for mounting the coated sheet upon a board, and mechanism for smoothing the mounted soard, comprising two juxtaposed pairs of sn'ioothing rolls, the me: bers of each pair of smoothing rolls Jeing of dii'terent diameters arranged oppositely in each respective pair to exert a double :tlexure upon said mounted board as it passes through said mohanisrn.

lat. In a machine {for mounting sheets upon boards a gumining roll for applying a coating or adhesive to the sheets, a pressure device for mounting the g3"u'i11ied sheets upon the boards, eat one for transferring the gununml sneet gmnming roll to the presses-e device, said niea comprisa sn'ioothing roll to enga e the coated side of the sheet and a guiding means loc ted upon opposite sides of the axis of said smoothing roll to place the sheet under a double tlexure as it passes said smoothing roll,

it in a machine for mounting sheets upon boards. a gumminrg roll for applying a co: in o; of adhesive t he sheets, a presr 1 z gummed sheets Jon the boards, and mea 4 for transferring e sheet from the gumming roll .sure device, said means compriso t u e device for moui'iting t'n u its 3 a double tenure as it passes :ning roll to said pressure deone or said plurality of rollers e11 A v the coated side of said sheet to smooth the adhesiw thereon.

Hi. In a machine for mounting sheets upon boards, a gumn'iing roll for applying a coming of mil tia-sire to the sheets, a presil'roin soul g n sure device for mounting the gummed sheets upon the boards, and insane for transferring the gummed sheet from the gumming roll to the pressure device, said means comprising a plurality of rollers arranged to place the sheet under a double ilexure as it passes from said gumming roll to said pressure device, one of said plurality of rollers engaging the coated side of said sheet to smooth the adhesive thereon, and means for rotating said rollers at a greater speed than said gumming roll.

17. In a machine for mounting sheets upon boards, a gumming roll for applying a coating of adhesive to the sheets, a pressure device for mounting the gummed sheets upon the boards, and means for transferring the gummed sheet from the gumming roll to the pressure device, said means comprising a smoothing roll and a reversing roller to direct the coated side of said sheet into contact with said smoothing roll.

18. In a machine for mounting sheets upon boards, a gumining roll, a pair of feeding rollers for feeding the sheets to said gumming roll, one of said rollers being mounted for movement towards and away from the other, intern'iittently rotating means for said feeding rollers, and means operating in timed relationship therewith to cause said feed rollers to be brought into contacting engagement with the sheets during the dwell period of said intermittently rotating means, whereby the sheet will be clanuped between said feed rollers before said rollers are rotated.

19. ln a machine for mounting sheets upon boards, a gumming roll, a pair of feeding rollers for feeding the sheets to said gumming roll, one of said rollers being mounted for movement towards and away from the other, intermittently rotating means for said feeding rollers, and means operating in timed relationship therewith to cause said feed rollers to be held momentarily away from each other and then to be brought towards each other into contacting engagement with the sheet during the dwell period of said intermittently rotating means, whereby the sheet may be introduced between and then clamped by said feed rollers before said rollers are rotated.

In testimony whereof we have signed this specification.

MARTIN FEYBUSCH. PAUL VJ. FLEISCHER. 

